Buckeye Brownies
Buckeye Brownies offer a delightful mix of rich chocolate and creamy peanut butter, combining the best of two beloved treats into one irresistible dessert. These brownies are a feast for the senses with their fudgy texture and tantalizing flavors. Picture sinking your teeth into a soft brownie base, topped with a velvety peanut butter layer, which is then smothered in smooth chocolate ganache. The sweet and salty profiles dance together in every bite, making it an instant classic with anyone lucky enough to try them.
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I first stumbled upon the idea of Buckeye Brownies during a family gathering when a cousin brought a tray to share, and I was immediately hooked! This recipe is perfect for any occasion when dessert cravings hit or for those cozy nights at home. Plus, they are surprisingly easy to whip up, making them a crowd-pleaser and something any home baker can tackle. Trust me, once you give these brownies a try, you’ll wonder how you ever lived without them!
Why You’ll Love This Recipe
- Simple & Quick: These brownies come together in about 40 minutes of prep and bake time—perfect for last-minute dessert needs.
- Irresistible Flavor: Rich chocolate and creamy peanut butter create a harmonious combination that anyone will find hard to resist.
- Eye-Catching Appeal: Stacked layers of chocolate and peanut butter look impressive, making them great for parties or gatherings.
- Flexible Serving: Ideal for any occasion, these brownies can be enjoyed as a sweet snack, dessert after dinner, or even breakfast treat on a cozy weekend.
- Diet-Friendly Options: You can easily adjust the recipe to be gluten-free by using alternative flours or vegan by substituting the butter and eggs.
Ingredients You’ll Need
- 6 oz semisweet chocolate (1 cup): Provides the rich chocolate flavor in the brownie base. Consider using high-quality chocolate for the best taste.
- ½ cup salted butter: This adds richness and moisture to the brownies. If you’re using unsalted butter, adjust by adding a pinch of salt.
- 2 large eggs: Acts as a binder, giving the brownies their fudgy texture. Bring them to room temperature for better mixing.
- ¾ cup granulated sugar: Sweetens the brownies and helps achieve the perfect texture. You can experiment with brown sugar for a deeper flavor.
- 2 teaspoons pure vanilla extract: Enhances the chocolate flavor with its aromatic profile. Always opt for pure vanilla for the best results.
- ¾ cup all-purpose flour: Provides structure to the brownies while maintaining their moistness. Substitute with gluten-free flour if needed.
- 1 tablespoon unsweetened cocoa powder: Intensifies the chocolate flavor. Look for high-quality cocoa for a richer taste.
- ¼ teaspoon fine sea salt: Balances sweetness and enhances flavor. It’s crucial not to skip this step for a more rounded taste.
- ¾ cup creamy peanut butter: Forms the creamy layer on top, adding that signature Buckeye flavor. You can swap for crunchy peanut butter for added texture.
- ¼ cup salted butter (softened): This butter creates the creamy peanut butter mixture; softened is key for smooth mixing.
- ½ teaspoon pure vanilla extract: Just like before, it strengthens the flavor profile of the peanut butter.
- ¼ teaspoon fine sea salt: Ensures the peanut butter layer has that delightfully balanced taste.
- 1 ½ cups powdered sugar: Sweetens the peanut butter layer. Sifting it before adding will help avoid lumps.
- 1-2 tablespoons whole milk (room temperature): Adjusts the consistency of the peanut butter layer. Add just enough for the perfect spreadable texture.
- ½ cup heavy cream: A key ingredient for making the ganache that will top the brownies.
- 1 cup semisweet chocolate (6 ounces): Used for the ganache, it provides a rich chocolate finish. Again, using high-quality chocolate is recommended.
How to Make Buckeye Brownies
- Preheat the Oven: Start by preheating your oven to 350 degrees Fahrenheit (177 degrees Celsius). Line a 9×9” baking dish with parchment paper and lightly grease it for easy removal later.
- Mix Dry Ingredients: In a small bowl, combine ¾ cup all-purpose flour, 1 tablespoon unsweetened cocoa powder, and ¼ teaspoon fine sea salt; set aside for later use.
- Melt Chocolate and Butter: In a microwave-safe bowl or over low heat on the stovetop, melt 6 oz of semisweet chocolate and ½ cup salted butter together. Stir until the mixture is smooth and glossy, then let it cool slightly.
- Beat Eggs: In the bowl of a standing mixer, beat 2 large eggs for 1 minute until they are fluffy.
- Combine Sugar and Chocolate Mixture: Add ¾ cup granulated sugar to the eggs and beat for another minute. Next, mix in the slightly cooled chocolate and butter mixture along with 2 teaspoons of pure vanilla extract until fully incorporated.
- Incorporate Dry Ingredients: Gradually add your dry mixture into the wet ingredients. Mix on low speed until just combined and no lumps remain. The batter should be thick.
- Spread Batter in Pan: Evenly pour and spread the brownie batter into the prepared baking pan.
- Bake Brownies: Place in the preheated oven and bake for 25 to 28 minutes, or until the top is set and only slightly jiggly in the center. A toothpick inserted should come out with only a few moist crumbs.
- Cool Completely: Let the brownies cool in the pan on a wire rack. For quicker cooling, they can also be placed in the refrigerator or freezer for a bit.
- Prepare the Peanut Butter Layer: In a standing mixer or large bowl, beat ¼ cup softened salted butter until smooth. Add ¾ cup creamy peanut butter and mix until well combined. Next, add ½ teaspoon pure vanilla extract and ¼ teaspoon fine sea salt, mixing until smooth.
- Mix in Powdered Sugar: Gradually add in 1 ½ cups powdered sugar, one cup at a time, beating fully after each addition. Add 1 tablespoon of room temperature whole milk and mix until you reach your desired consistency, adding a second tablespoon if needed.
- Spread Peanut Butter Mixture: Evenly spread the peanut butter filling over the cooled brownie layer. To help with setting, consider placing the brownies in the refrigerator momentarily.
- Make the Ganache: Heat ½ cup heavy cream over medium heat until it starts to bubble around the edges but doesn’t boil. Turn off the heat and whisk in 1 cup semisweet chocolate until completely smooth.
- Cool Ganache: Allow the ganache to cool slightly while whisking occasionally until it thickens a bit.
- Finish the Brownies: Pour and evenly spread the ganache over the peanut butter layer. Chill the brownies in the refrigerator or leave them at room temperature until the ganache sets completely.
- Cut and Serve: Slice into 16 squares, serve, and enjoy every bite of these indulgent treats!
Storing & Reheating
To store Buckeye Brownies, keep them at room temperature in an airtight container for up to 3 days. If you wish to extend their life, refrigerate them for up to a week. For longer storage, wrap the brownies tightly in plastic wrap and then foil, placing them in the freezer for up to 3 months. When ready to enjoy, simply thaw them in the refrigerator overnight or at room temperature for about an hour. Keep in mind the texture might change slightly, but you can refresh it by warming in the microwave for about 10-15 seconds.
Chef’s Helpful Tips
- Don’t Overmix: When combining wet and dry ingredients, mix just until there are no lumps to avoid tough brownies.
- Use Room Temperature Ingredients: For the best results, ensure butter, eggs, and milk are at room temperature; this promotes a smoother batter.
- Timing is Key: Keep an eye on the baking time; if overbaked, brownies will become dry. They should still appear slightly underbaked in the center when removed.
- Flavor Variations: Experiment with mix-ins like chopped nuts, chocolate chips, or swirls of caramel for a delicious twist.
- Prepping Ahead: Both the brownie base and peanut butter layer can be made a day in advance to save time.
These Buckeye Brownies are more than just a dessert; they bring together the nostalgia of childhood treats with the indulgence of homemade baking. The combination of rich chocolate and creamy peanut butter is simply irresistible! Don’t hesitate to put your twist on them—be creative with toppings or add-ins, and enjoy the process as much as the results. Happy baking!

Recipe FAQs
Can I make Buckeye Brownies gluten-free?
Absolutely! You can substitute all-purpose flour with a gluten-free blend that measures cup-for-cup. This will maintain the texture and flavor while accommodating dietary preferences.
How should I store leftover brownies?
Store your brownies in an airtight container at room temperature for up to 3 days. For longer storage, refrigerate them or freeze them for up to 3 months. Just be sure to wrap them well to avoid freezer burn!
Can I use crunchy peanut butter instead of creamy?
Yes! If you prefer some texture in your peanut butter layer, feel free to use crunchy peanut butter. It adds a delightful crunch and still pairs beautifully with the chocolate.
How do I know when my brownies are done baking?
Look for the edges to be set and the center slightly jiggly. When a toothpick is inserted, it should come out with a few moist crumbs—this ensures you’ve got those lovely fudgy brownies you crave!
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📖 Recipe Card

Buckeye Brownies
- Prep Time: 30 minutes
- Cook Time: 25 minutes
- Total Time: 55 minutes
- Yield: 16 servings 1x
- Category: Desserts
- Method: Baking
- Cuisine: American
Description
These Buckeye Brownies are a delightful treat featuring rich chocolate and creamy peanut butter, making them perfect for any occasion. Simple to prepare and packed with flavor, these brownies are destined to impress your family and friends!
Ingredients
- 6 oz semisweet chocolate
- ½ cup salted butter
- 2 large eggs
- ¾ cup granulated sugar
- 2 teaspoons pure vanilla extract
- ¾ cup all-purpose flour
- 1 tablespoon unsweetened cocoa powder
- ¼ teaspoon fine sea salt
- ¾ cup creamy peanut butter
- ¼ cup salted butter (softened)
- ½ teaspoon pure vanilla extract
- ¼ teaspoon fine sea salt
- 1 ½ cups powdered sugar
- 1–2 tablespoons whole milk (room temperature)
- ½ cup heavy cream
- 1 cup semisweet chocolate (6 ounces)
Instructions
- Preheat the oven to 350°F (177°C). Line a 9×9 inch baking dish with parchment paper and lightly grease it. Set aside.
- Melt 6 oz of semisweet chocolate and ½ cup of salted butter together in a microwave-safe bowl, heating in 30-second increments until fully melted. Stir until smooth.
- In a large mixing bowl, whisk together 2 large eggs, ¾ cup granulated sugar, and 2 teaspoons of pure vanilla extract until well combined.
- Add the melted chocolate mixture to the egg mixture and stir until fully integrated.
- Sift in ¾ cup all-purpose flour, 1 tablespoon unsweetened cocoa powder, and ¼ teaspoon fine sea salt. Fold gently until just combined.
- Pour the brownie batter into the prepared baking dish and spread evenly. Bake in the preheated oven for about 20-25 minutes, or until a toothpick comes out with a few moist crumbs.
- While baking, prepare the peanut butter layer by mixing ¾ cup of creamy peanut butter, ¼ cup softened salted butter, ½ teaspoon pure vanilla extract, ¼ teaspoon fine sea salt, and 1 ½ cups of powdered sugar in a bowl.
- Add 1-2 tablespoons of whole milk, as needed, to achieve a spreadable consistency. Set aside.
- Once the brownies are baked and cooled, spread an even layer of the peanut butter mixture over the top.
- For the ganache, heat ½ cup of heavy cream until it just begins to simmer. Pour over 1 cup of semisweet chocolate and let it sit for a minute, then stir until smooth and glossy.
- Pour the ganache over the peanut butter layer and spread evenly. Chill in the refrigerator until the ganache is set, then cut into squares and serve.
Notes
Ensure the brownies are completely cooled before adding the peanut butter layer to prevent it from melting.
Use room temperature ingredients for the best results, especially the butter and eggs.
For added flavor, sprinkle a pinch of sea salt on top of the ganache before it sets.
Nutrition
- Serving Size: 1 brownie
- Calories: 350
- Sugar: 24g
- Sodium: 200mg
- Fat: 22g
- Saturated Fat: 10g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 36g
- Fiber: 1g
- Protein: 6g
- Cholesterol: 45mg
